./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eee587482483666264883da3a201ae82d389545c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:44:11,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:44:11,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:44:11,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:44:11,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:44:11,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:44:11,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:44:11,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:44:11,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:44:11,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:44:11,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:44:11,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:44:11,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:44:11,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:44:12,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:44:12,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:44:12,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:44:12,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:44:12,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:44:12,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:44:12,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:44:12,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:44:12,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:44:12,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:44:12,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:44:12,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:44:12,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:44:12,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:44:12,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:44:12,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:44:12,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:44:12,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:44:12,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:44:12,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:44:12,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:44:12,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:44:12,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:44:12,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:44:12,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:44:12,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:44:12,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:44:12,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:44:12,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:44:12,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:44:12,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:44:12,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:44:12,075 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:44:12,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:44:12,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:44:12,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:44:12,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:44:12,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:44:12,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:44:12,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:44:12,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:44:12,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:44:12,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:44:12,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:44:12,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:44:12,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:44:12,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:44:12,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:44:12,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:44:12,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:44:12,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:44:12,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:44:12,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:44:12,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:44:12,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:44:12,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:44:12,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:44:12,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eee587482483666264883da3a201ae82d389545c [2020-10-20 01:44:12,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:44:12,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:44:12,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:44:12,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:44:12,322 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:44:12,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2020-10-20 01:44:12,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d364156bf/bef37cb145e34918b3b5867b4d3d95cc/FLAG889e12048 [2020-10-20 01:44:12,838 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:44:12,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2020-10-20 01:44:12,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d364156bf/bef37cb145e34918b3b5867b4d3d95cc/FLAG889e12048 [2020-10-20 01:44:13,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d364156bf/bef37cb145e34918b3b5867b4d3d95cc [2020-10-20 01:44:13,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:44:13,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:44:13,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:13,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:44:13,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:44:13,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfae833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13, skipping insertion in model container [2020-10-20 01:44:13,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:44:13,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:44:13,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:13,673 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:44:13,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:44:13,776 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:44:13,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13 WrapperNode [2020-10-20 01:44:13,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:44:13,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:13,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:44:13,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:44:13,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:44:13,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:44:13,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:44:13,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:44:13,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (1/1) ... [2020-10-20 01:44:13,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:44:13,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:44:13,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:44:13,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:44:13,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:44:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:44:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:44:13,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:44:13,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:44:14,810 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:44:14,811 INFO L298 CfgBuilder]: Removed 122 assume(true) statements. [2020-10-20 01:44:14,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:14 BoogieIcfgContainer [2020-10-20 01:44:14,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:44:14,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:44:14,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:44:14,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:44:14,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:44:13" (1/3) ... [2020-10-20 01:44:14,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cdf282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:14, skipping insertion in model container [2020-10-20 01:44:14,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:44:13" (2/3) ... [2020-10-20 01:44:14,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cdf282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:44:14, skipping insertion in model container [2020-10-20 01:44:14,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:14" (3/3) ... [2020-10-20 01:44:14,821 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2020-10-20 01:44:14,833 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:44:14,840 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:44:14,854 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:44:14,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:44:14,876 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:44:14,876 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:44:14,877 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:44:14,877 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:44:14,877 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:44:14,877 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:44:14,878 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:44:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-20 01:44:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:44:14,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:14,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:14,899 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:14,904 INFO L82 PathProgramCache]: Analyzing trace with hash 109983179, now seen corresponding path program 1 times [2020-10-20 01:44:14,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:14,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346493520] [2020-10-20 01:44:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:15,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346493520] [2020-10-20 01:44:15,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:15,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:15,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411430684] [2020-10-20 01:44:15,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:44:15,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:15,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:44:15,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:44:15,190 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-10-20 01:44:15,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:15,220 INFO L93 Difference]: Finished difference Result 171 states and 254 transitions. [2020-10-20 01:44:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:44:15,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:44:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:15,232 INFO L225 Difference]: With dead ends: 171 [2020-10-20 01:44:15,233 INFO L226 Difference]: Without dead ends: 83 [2020-10-20 01:44:15,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:44:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-20 01:44:15,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-20 01:44:15,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-20 01:44:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2020-10-20 01:44:15,276 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2020-10-20 01:44:15,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:15,276 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2020-10-20 01:44:15,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:44:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2020-10-20 01:44:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:44:15,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:15,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:15,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:44:15,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:15,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:15,279 INFO L82 PathProgramCache]: Analyzing trace with hash -936773718, now seen corresponding path program 1 times [2020-10-20 01:44:15,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:15,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134191172] [2020-10-20 01:44:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:15,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134191172] [2020-10-20 01:44:15,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:15,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:15,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17087786] [2020-10-20 01:44:15,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:15,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:15,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:15,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:15,416 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand 3 states. [2020-10-20 01:44:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:15,428 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2020-10-20 01:44:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:15,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:44:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:15,430 INFO L225 Difference]: With dead ends: 83 [2020-10-20 01:44:15,430 INFO L226 Difference]: Without dead ends: 37 [2020-10-20 01:44:15,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-20 01:44:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-20 01:44:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 01:44:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2020-10-20 01:44:15,438 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2020-10-20 01:44:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:15,438 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2020-10-20 01:44:15,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2020-10-20 01:44:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:44:15,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:15,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:15,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:44:15,441 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:15,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:15,441 INFO L82 PathProgramCache]: Analyzing trace with hash 533078269, now seen corresponding path program 1 times [2020-10-20 01:44:15,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:15,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128968260] [2020-10-20 01:44:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:15,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128968260] [2020-10-20 01:44:15,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:15,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:44:15,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931432412] [2020-10-20 01:44:15,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:15,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:15,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:15,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:15,535 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand 3 states. [2020-10-20 01:44:15,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:15,561 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2020-10-20 01:44:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:15,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-20 01:44:15,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:15,563 INFO L225 Difference]: With dead ends: 68 [2020-10-20 01:44:15,563 INFO L226 Difference]: Without dead ends: 37 [2020-10-20 01:44:15,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-20 01:44:15,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-20 01:44:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 01:44:15,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-10-20 01:44:15,570 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2020-10-20 01:44:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:15,570 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-10-20 01:44:15,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:15,571 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-10-20 01:44:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 01:44:15,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:15,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:15,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:44:15,573 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:15,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:15,573 INFO L82 PathProgramCache]: Analyzing trace with hash 545820985, now seen corresponding path program 1 times [2020-10-20 01:44:15,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:15,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132423826] [2020-10-20 01:44:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:15,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132423826] [2020-10-20 01:44:15,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:15,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:44:15,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282528950] [2020-10-20 01:44:15,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:44:15,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:15,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:44:15,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:15,633 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2020-10-20 01:44:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:15,680 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2020-10-20 01:44:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:44:15,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-20 01:44:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:15,682 INFO L225 Difference]: With dead ends: 89 [2020-10-20 01:44:15,682 INFO L226 Difference]: Without dead ends: 58 [2020-10-20 01:44:15,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:44:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-20 01:44:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-20 01:44:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 01:44:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2020-10-20 01:44:15,692 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2020-10-20 01:44:15,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:15,692 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2020-10-20 01:44:15,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:44:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2020-10-20 01:44:15,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 01:44:15,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:15,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:15,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:44:15,695 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:15,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:15,695 INFO L82 PathProgramCache]: Analyzing trace with hash 2110814541, now seen corresponding path program 1 times [2020-10-20 01:44:15,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:15,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846898891] [2020-10-20 01:44:15,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:15,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846898891] [2020-10-20 01:44:15,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:15,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:44:15,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807861139] [2020-10-20 01:44:15,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 01:44:15,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:15,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 01:44:15,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:44:15,848 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand 7 states. [2020-10-20 01:44:16,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:16,147 INFO L93 Difference]: Finished difference Result 347 states and 506 transitions. [2020-10-20 01:44:16,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 01:44:16,150 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-20 01:44:16,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:16,153 INFO L225 Difference]: With dead ends: 347 [2020-10-20 01:44:16,154 INFO L226 Difference]: Without dead ends: 297 [2020-10-20 01:44:16,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-20 01:44:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-20 01:44:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2020-10-20 01:44:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-20 01:44:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2020-10-20 01:44:16,190 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 29 [2020-10-20 01:44:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:16,191 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2020-10-20 01:44:16,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 01:44:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2020-10-20 01:44:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-20 01:44:16,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:16,193 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:16,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:44:16,194 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:16,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1046048558, now seen corresponding path program 1 times [2020-10-20 01:44:16,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:16,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005498974] [2020-10-20 01:44:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 01:44:16,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005498974] [2020-10-20 01:44:16,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:16,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:44:16,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851622215] [2020-10-20 01:44:16,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:44:16,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:16,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:44:16,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:16,281 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand 5 states. [2020-10-20 01:44:16,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:16,338 INFO L93 Difference]: Finished difference Result 388 states and 531 transitions. [2020-10-20 01:44:16,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:44:16,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-20 01:44:16,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:16,340 INFO L225 Difference]: With dead ends: 388 [2020-10-20 01:44:16,340 INFO L226 Difference]: Without dead ends: 254 [2020-10-20 01:44:16,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:44:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-20 01:44:16,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 149. [2020-10-20 01:44:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-20 01:44:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2020-10-20 01:44:16,358 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 47 [2020-10-20 01:44:16,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:16,358 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2020-10-20 01:44:16,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:44:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2020-10-20 01:44:16,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-20 01:44:16,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:16,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:16,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:44:16,361 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:16,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:16,362 INFO L82 PathProgramCache]: Analyzing trace with hash 536575468, now seen corresponding path program 1 times [2020-10-20 01:44:16,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:16,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831031622] [2020-10-20 01:44:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 01:44:16,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831031622] [2020-10-20 01:44:16,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:44:16,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:44:16,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549792982] [2020-10-20 01:44:16,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:44:16,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:16,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:44:16,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:44:16,439 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand 4 states. [2020-10-20 01:44:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:16,470 INFO L93 Difference]: Finished difference Result 311 states and 422 transitions. [2020-10-20 01:44:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:44:16,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-20 01:44:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:16,472 INFO L225 Difference]: With dead ends: 311 [2020-10-20 01:44:16,472 INFO L226 Difference]: Without dead ends: 168 [2020-10-20 01:44:16,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:44:16,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-20 01:44:16,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 123. [2020-10-20 01:44:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-20 01:44:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2020-10-20 01:44:16,485 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 47 [2020-10-20 01:44:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:16,486 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2020-10-20 01:44:16,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:44:16,486 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2020-10-20 01:44:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-20 01:44:16,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:16,488 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:16,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:44:16,489 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:16,489 INFO L82 PathProgramCache]: Analyzing trace with hash 731048172, now seen corresponding path program 1 times [2020-10-20 01:44:16,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:16,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89056768] [2020-10-20 01:44:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:16,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89056768] [2020-10-20 01:44:16,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082652619] [2020-10-20 01:44:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:44:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:44:16,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 01:44:16,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:44:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:44:16,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:44:16,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 01:44:16,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264268260] [2020-10-20 01:44:16,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:44:16,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:44:16,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:44:16,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:44:16,822 INFO L87 Difference]: Start difference. First operand 123 states and 164 transitions. Second operand 6 states. [2020-10-20 01:44:17,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:44:17,059 INFO L93 Difference]: Finished difference Result 346 states and 476 transitions. [2020-10-20 01:44:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:44:17,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-20 01:44:17,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:44:17,062 INFO L225 Difference]: With dead ends: 346 [2020-10-20 01:44:17,062 INFO L226 Difference]: Without dead ends: 252 [2020-10-20 01:44:17,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-20 01:44:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-20 01:44:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 162. [2020-10-20 01:44:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-20 01:44:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 215 transitions. [2020-10-20 01:44:17,086 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 215 transitions. Word has length 48 [2020-10-20 01:44:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:44:17,087 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 215 transitions. [2020-10-20 01:44:17,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:44:17,087 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 215 transitions. [2020-10-20 01:44:17,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-20 01:44:17,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:44:17,092 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:44:17,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-20 01:44:17,308 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:44:17,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:44:17,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1116869215, now seen corresponding path program 2 times [2020-10-20 01:44:17,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:44:17,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242573763] [2020-10-20 01:44:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:44:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:17,391 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:44:17,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:44:17,508 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:44:17,509 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:44:17,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:44:17,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:44:17 BoogieIcfgContainer [2020-10-20 01:44:17,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:44:17,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:44:17,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:44:17,663 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:44:17,664 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:44:14" (3/4) ... [2020-10-20 01:44:17,666 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:44:17,817 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:44:17,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:44:17,820 INFO L168 Benchmark]: Toolchain (without parser) took 4649.17 ms. Allocated memory was 36.2 MB in the beginning and 71.8 MB in the end (delta: 35.7 MB). Free memory was 8.9 MB in the beginning and 9.6 MB in the end (delta: -693.8 kB). Peak memory consumption was 35.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,820 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 35.7 MB. Free memory was 14.6 MB in the beginning and 14.6 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.38 ms. Allocated memory was 36.2 MB in the beginning and 46.1 MB in the end (delta: 10.0 MB). Free memory was 8.0 MB in the beginning and 17.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.07 ms. Allocated memory was 46.1 MB in the beginning and 46.7 MB in the end (delta: 524.3 kB). Free memory was 17.4 MB in the beginning and 26.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,822 INFO L168 Benchmark]: Boogie Preprocessor took 56.36 ms. Allocated memory is still 46.7 MB. Free memory was 26.7 MB in the beginning and 24.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,822 INFO L168 Benchmark]: RCFGBuilder took 900.43 ms. Allocated memory was 46.7 MB in the beginning and 50.3 MB in the end (delta: 3.7 MB). Free memory was 24.1 MB in the beginning and 25.7 MB in the end (delta: -1.6 MB). Peak memory consumption was 17.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,823 INFO L168 Benchmark]: TraceAbstraction took 2848.88 ms. Allocated memory was 50.3 MB in the beginning and 71.8 MB in the end (delta: 21.5 MB). Free memory was 25.4 MB in the beginning and 38.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 40.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,824 INFO L168 Benchmark]: Witness Printer took 154.63 ms. Allocated memory is still 71.8 MB. Free memory was 38.1 MB in the beginning and 9.6 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:44:17,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 35.7 MB. Free memory was 14.6 MB in the beginning and 14.6 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 601.38 ms. Allocated memory was 36.2 MB in the beginning and 46.1 MB in the end (delta: 10.0 MB). Free memory was 8.0 MB in the beginning and 17.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 76.07 ms. Allocated memory was 46.1 MB in the beginning and 46.7 MB in the end (delta: 524.3 kB). Free memory was 17.4 MB in the beginning and 26.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 56.36 ms. Allocated memory is still 46.7 MB. Free memory was 26.7 MB in the beginning and 24.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 900.43 ms. Allocated memory was 46.7 MB in the beginning and 50.3 MB in the end (delta: 3.7 MB). Free memory was 24.1 MB in the beginning and 25.7 MB in the end (delta: -1.6 MB). Peak memory consumption was 17.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2848.88 ms. Allocated memory was 50.3 MB in the beginning and 71.8 MB in the end (delta: 21.5 MB). Free memory was 25.4 MB in the beginning and 38.1 MB in the end (delta: -12.8 MB). Peak memory consumption was 40.6 MB. Max. memory is 14.3 GB. * Witness Printer took 154.63 ms. Allocated memory is still 71.8 MB. Free memory was 38.1 MB in the beginning and 9.6 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L312] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L575] int cleanupTimeShifts = 4; [L744] int pumpRunning = 0; [L745] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L651] int retValue_acc ; [L652] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L658] tmp = valid_product() [L660] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L676] int splverifierCounter ; [L677] int tmp ; [L678] int tmp___0 ; [L679] int tmp___1 ; [L680] int tmp___2 ; [L683] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L685] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L687] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L693] tmp = __VERIFIER_nondet_int() [L695] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L703] tmp___0 = __VERIFIER_nondet_int() [L705] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L713] tmp___2 = __VERIFIER_nondet_int() [L715] COND TRUE \read(tmp___2) [L917] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L751] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L758] COND TRUE \read(systemActive) [L780] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L783] COND TRUE ! pumpRunning [L895] int retValue_acc ; [L896] int tmp ; [L897] int tmp___0 ; [L129] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L901] tmp = isHighWaterSensorDry() [L903] COND FALSE !(\read(tmp)) [L906] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L908] retValue_acc = tmp___0 [L909] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L785] tmp = isHighWaterLevel() [L787] COND TRUE \read(tmp) [L814] int tmp ; [L839] int retValue_acc ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L843] retValue_acc = isMethaneLevelCritical() [L845] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L818] tmp = isMethaneAlarm() [L820] COND FALSE !(\read(tmp)) [L808] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L550] int tmp ; [L551] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L555] tmp = getWaterLevel() [L557] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L685] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L687] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L693] tmp = __VERIFIER_nondet_int() [L695] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L703] tmp___0 = __VERIFIER_nondet_int() [L705] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L713] tmp___2 = __VERIFIER_nondet_int() [L715] COND TRUE \read(tmp___2) [L917] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L751] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L758] COND TRUE \read(systemActive) [L780] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L783] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L550] int tmp ; [L551] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L555] tmp = getWaterLevel() [L557] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L685] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L687] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L693] tmp = __VERIFIER_nondet_int() [L695] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L703] tmp___0 = __VERIFIER_nondet_int() [L705] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L713] tmp___2 = __VERIFIER_nondet_int() [L715] COND TRUE \read(tmp___2) [L917] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L751] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L758] COND TRUE \read(systemActive) [L780] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L783] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L550] int tmp ; [L551] int tmp___0 ; [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L555] tmp = getWaterLevel() [L557] COND TRUE tmp == 0 [L850] int retValue_acc ; [L853] retValue_acc = pumpRunning [L854] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L559] tmp___0 = isPumpRunning() [L561] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product42.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 90 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 600 SDtfs, 796 SDslu, 838 SDs, 0 SdLazy, 159 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 399 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 18720 SizeOfPredicates, 4 NumberOfNonLiveVariables, 417 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...